Two shakes

Watermelon shake
Take a watermelon. Remove pips. Put in blender with a tray of ice. Blend. 
OMG yum. 
One watermelon normally makes two blenders full. 
Hint: How to get pips out of watermelons
Use two bowls and a sieve. Scoop out the watermelon flesh into one of the bowls, then use your hands to grab out bits of flesh. [...]